Other Changes

Loosening Reserved Word Restrictions

Globally reserved words as property, constant, and method names within classes,
interfaces, and traits are now allowed. This reduces the surface of BC breaks
when new keywords are introduced and avoids naming restrictions on APIs.

This is particularly useful when creating internal DSLs with fluent interfaces:

The only limitation is that the class keyword still
cannot be used as a constant name, otherwise it would conflict with the
class name resolution syntax (ClassName::class).

Removal of date.timezone Warning

Previously, a warning was emitted if the
date.timezone INI setting had not
been set prior to using any date- or time-based functions. Now, this warning
has been removed (with
date.timezone still defaulting to
UTC).